EARTHQUAKE WATCH
NAME: _______________________ DATE: ______________________ BLOCK: _________
Plot the earthquakes from the data supplied in the data table below. Use latitude and longitude lines on the
map for plotting the earthquakes. Choose 3 different colors to plot with, a different one for each of the
following: Shallow earthquakes (less than 70km), Intermediate (71 – 300 km), and Deep ( 301 – 650km).
GEOGRAPHIC COORDINATES of RECENT EARTHQUAKES
REGION
Latitude
Longitude
Depth (Km)
145 W
154 E
140 E
94 W
118 W
69 E
115 W
123 W
28 W
164 W
180 E
153 W
79 W
162 E
16
32
58
61
11
34
51
40
51
58
28
38
54
44
153 W
130 E
77 W
107 W
72 E
123 W
67 W
148W
123 E
27 E
167 E
88
102
150
105
196
173
174
118
263
151
126
178 W
81 W
137 E
71 W
146 E
128 W
638
338
404
369
427
332
SHALLOW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Gulf of Alaska
Kuril Islands
Honshu, Japan
Chiapas, Mexico
Southern California
West Pakistan
British Columbia
Washington
Mid-Atlantic Ridge
Unimak Island
Rat Islands, Aleutians
Kodiak Island
Off Coast of Northern Peru
Off Coast of Kamchatka
15
16
17
18
19
20
21
22
23
24
25
Southern Alaska
Banda Sea
Peru-Ecuador Border
Easter Island Cordillera
Afghanistan-USSR Border
Seattle Washington
Chile-Argentina Border
Central Alaska
Flores Sea
Dodecanese Islands
New Hebrides
26
27
28
29
30
31
Fiji Islands
Near Coast of Ecuador
South of Honshu, Japan
Central Chile
Mariana Islands
South Pacific Cordillera
59 N
47 N
36 N
17 N
34 N
29 N
50 N
47 N
1N
54 N
52 N
56 N
9S
57 N
INTERMEDIATE
60 N
75N
3S
35 S
37 N
43 N
24 S
64 N
8S
37 N
15 S
DEEP
19 S
1S
32 N
31 S
19 N
55S
Analysis and Conclusions
1. Describe one type of lithospheric plate boundary that would cause earthquakes to occur.
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2. Describe how elastic rebound could have caused these earthquakes.
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3. Considering you have just plotted 31 recent earthquakes of varying depths on this map, did you plot
the epicenter or the focus of the earthquakes?
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4. How do you know you plotted what you said you did in number 3?
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5. The first earthquake you plotted occurred at a subduction boundary between what 2 major plates?
(hint: Look at the plate map on page 538)
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6. All earthquakes produce seismic waves, in fact an earthquake IS seismic waves, knowing that,
which type of seismic wave would be the first to be detected by a seismograph station in West
Virginia?
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Which would be the next type of wave detected by this station?
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The difference between the arrival times of both of these waves is called what?
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7. Where were most of the earthquakes concentrated, along which major fault zones? (pg 538)
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8. Of the three types of earthquakes you plotted on the map, which type was most common?
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9. Which of these three types of earthquakes is most damaging and why?
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10. The deepest earthquakes occur along what type of plate boundary? _________________________
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